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Date: Sun, 26 Oct 2008 17:21:41 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Arjan van de Ven <arjan@infradead.org>
CC: "Diego M. Vadell" <dvadell@linuxclusters.com.ar>,
       Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: PAT and MTRRs
References: <200810262246.21807.dvadell@linuxclusters.com.ar> <20081026171210.7b3b096a@infradead.org>
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Arjan van de Ven wrote:
> 
> PAT can't make memory cachable that the MTRR's have as uncachable.
> What PAT *can* do is, within an MTRR, do fine grained mapping...
> 

Now, if it wasn't for the braindamage called ACPI and SMM, we could have 
   cleared the MTRR settings and just used PAT...

	-hpa